Printable View
I was playing around with some code to receive shell change
notifications using:
SHChangeNotifyRegister (and others)
however I'd like to intercept the file creation messages and
prevent certain files from being created.
It appears that by the time I get the message SHCNE_CREATE
and SHCNE_UPDATEDIR, the file has already been created.
Any ideas where to start?
Running:
Win2k Pro, SP 3
Visual Studio 6 Enterprise
Thanks,
xeno
Sorry, this isn't an answer... but this should probably be on the Windows Board.
And, this may be impossible without "hacking" the operating system. The operating system does not want you or your program interfering with it's operation or the operation of other programs.
... Sorry about posting in the wrong forum
DougDbug:
Thanks for your reply however I slightly disagree. I wouldn't
consider it a "hack" to prevent file types from being created. This
is done by programs such as Virus Scanners.
Take for instance, Norton AntiVirus. When a file is dropped on my
hard drive with a virus in it, Norton moves the file to a quarrantine
folder and does not allow the file to be created.
What I am trying to do is prevent users who are not in a certain
group from deploying Access databases on a network drive. My
employer will allow them to create databases on their local drive
however we do not want them deployed to the network unless
they are built and maintained by one of us Access developers.
Our reason for this is because the number of databases on our
servers got out of hand (and most weren't being used) and it has
taken us a long time to round up the "business necessary" databases
and delete all the others.
I would simply like to write an application that runs as a service and
checks the path where the file is being created. If the path is any
other than a local path, inform the user he/she may not deploy
a database on the network.
What about if it is not in Windows, think about in Linux.Quote:
Originally posted by DougDbug
Sorry, this isn't an answer... but this should probably be on the Windows Board.
And, this may be impossible without "hacking" the operating system. The operating system does not want you or your program interfering with it's operation or the operation of other programs.
Can you not put an ACL on the device or directory your legitimate db files are in and then grant access to the bona-fide developers?
I agree with adrian...this looks like more of a network privilage problem..If you did want to control the creation of files, you would probably need to intercept system services...and to do this you would need to write a driver to access the parts of windows that translate file system calls to the service calls that do all the work - tricky, version dependant & officially undocumented.
Your better off having a chat with your network admin IMO
Zahid:
I have never used unix so I wouldn't even know where to begin.
All our desktops are running Win2k Pro and will be upgraded to
WinXP soon. I'm not too concerned with writing for Unix since
this would be a local service rather than a "server side" service...
which our servers are in fact Unix based servers...
Adrian:
Yes, that would work however they want to prevent .mdb deployment
across the entire network, not just one specific folder. The company
has offices in 4 states and they want to prevent users in Florida
from deploying databases on the servers in New York, etc...
They attempted to do this with the Virus software we had which
worked (for the most part) however the users were not only
blocked from deploying... they couldn't open any databases with
any Macros in them without the Virus scanner "freaking" out.
They also tried using another mechanism (not sure what) to grant
read / execute permissions to the users however this became an
issue because it would not allow the .ldb file to be created when
the database was opened due to the lack of write permissions...
Fordy:
My network admin actually approached me on this one. He
mentioned that the company was looking into a software
package which will do this. He had asked if I could look into the
possibility of writing our own to avoid the licensing costs...
But, I don't know how to write the kind of driver you're talking
about and honestly wouldn't want to attempt it.
Thanks everyone for your replies though. I guess the company
will have to dish out the cash...